Minicomputer Graphic Methods for Geochemical Surveys

摘要

This report describes a minicomputer graphic approach to the analysis and display of geochemical survey data. The hardware configuration and operating software system and the major features of each are presented. Methods of entering and editing data into universal files are explained. The analysis and display of each file as a frequency distribution histogram, contour map, or three-dimensional projection are described. Statisticcal correlations between files, ratio files, sum files, and data location maps are also some of the features described. A special program is described for contouring randomly spaced data to provide both trend and difference maps with up to 3 degrees of polynomial smoothing. Applications are indicated. (ERA citation 03:046564)